<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
 
	class qrcode extends Front_Controller {
 
	// Set some Private Variables used in this Controller
	private $g_config = array();
	private $baseurl;
 
  //--------------------------------------------------------------------
 
  public function __construct() 
  {
		parent::__construct();
 
		$this->load->library('form_validation');
		$this->form_validation->CI =& $this;
 
		//Setup Google Charts Config URL
		$this->g_config['google_charts_base_url'] = 'https://chart.googleapis.com/chart';
		//Load GR Code Library
		$this->load->library('Gc_qrcode', $this->g_config);
		//Set a Variable for a Starting QR Code to be Generated            
		$this->baseurl = 'http://blog.s-vizion.com/';
  }
 
	//--------------------------------------------------------------------
 
	/*
	    method : index()
 
	    Base Method for Non AJAX Calls and for Inital Display of the Form
	*/
	public function index()
	{                        
 
		$url = $this->baseurl;
 
		// Check if input post is submitted, if so set URL to new URL
 
		if ( $this->input->post('submit') )
		{
	    $url = $this->input->post('linkto');
		}
 
		$this->gc_qrcode->size(250)->data( $url );
 
		$img = $this->gc_qrcode->img(array('id' => 'qrimg'));
 
		// Load the Inline JavaScript to Bind the Submit Handler to Post a AJAX Call to The AJAX Method
		Assets::add_js( $this->load->view('qrjs', null, true), 'inline');
		// Set Template Variable for Image
		Template::set('img', $img );
		// Render Template
		Template::render();
	}
 
	//--------------------------------------------------------------------
 
	/*
		method : ajax_qr()
 
		AJAX Method to Return the JSON Value for the URL of the New Image Tag
		Can be Secured with a Check if IS_AJAX but I'm not gonna add that to the scope of this tut
	*/
	public function ajax_qr()
	{
    $url = $this->baseurl;
    if ( $this->input->post('linkto') )
    {
      $url = $this->input->post('linkto');
    }
    // Create New QR Code
    $this->gc_qrcode->size(250)->data( $url );
    // Get URL to New QR Code
    $img = $this->gc_qrcode->url();
    // Set Output as JSON and Output the Content as JSON array
    $this->output->set_content_type('application/json')->set_output(json_encode(array('img' => $img )));
 
    return false;
  }
 
}
/* End file bonfire/modules/makeqr/controllers/makeqr.php */
?>

 
	<section id="qrcodes">
    <div class="page-header">
      <h1>QR-Code <small> Make your own QR Code by filling out the form!</small></h1>
    </div>
 
	<?php if ( validation_errors()) : ?>
	<div class="row-fluid">
    <div class="span12">
      <div class="alert alert-error fade in">
  	    <a data-dismiss="alert" class="close">×</a>
	      <?php echo validation_errors(); ?>
      </div>
    </div>
	</div>
	<?php endif; ?>
 
	<div class="row-fluid">
	  <div class="span4">
	    <?php if ( isset ( $img ) ) echo $img; ?>    
	  </div>
 
	  <div class="span6">
		<?php echo form_open($this->uri->uri_string(), 'class="form-horizontal" id="makeqr"'); ?>
 
		<div class="control-group">
			<label class="control-label" for="linkto">Website URL : </label>
			<div class="controls">
				<input class="span6" tabindex="1" type="text" id="linkto" name="linkto" placeholder="http://shawnc.org" value="<?php echo isset($makeqr) ? $makeqr->linkto : set_value('linkto') ?>" />
			</div>
		</div>
 
		<div class="control-group">
			<label class="control-label" for="submit">&nbsp;</label>
			<div class="controls">
			<input class="btn btn-success" type="submit" name="submit" id="submit" value="Create QR-Code" />
			</div>
		</div>
 
		</form>
 
	  </div>  
	</div>

 
			 //Form ID is set to "makeqr"
			 //The URL Value is IDed as "linkto"
			 //The Image to Replace is IDed as "qrimg"
 
       $("#makeqr").submit(function()
       {
         var dataString = $("#linkto").val();
         var img_rep    = $("#qrimg");
         img_rep.attr('src', '<?php echo base_url(); ?>assets/images/loading.gif');
        $.post(  
            "<?php echo base_url(); ?>makeqr/ajax_qr",
            {linkto: dataString },  
            function(data){
               var img = data['img'];
               img_rep.attr('src',img);
            },  
            "json"  
        );          
        return false;  //stop the actual form post !important!
 
      });